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Blade root structure made of bamboo composite material and manufacturing method thereof

A blade root, composite material technology, applied in final product manufacturing, sustainable manufacturing/processing, wind turbines that are consistent with the wind direction, etc., can solve the problem of high cost of fan blades, increase the bonding area, improve bonding the effect of strength

Inactive Publication Date: 2011-10-19
北京世纪威能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high cost of fan blades (the cost of each blade is between tens of thousands to hundreds of thousands of yuan), once it is scrapped, it will bring great economic losses

Method used

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  • Blade root structure made of bamboo composite material and manufacturing method thereof
  • Blade root structure made of bamboo composite material and manufacturing method thereof
  • Blade root structure made of bamboo composite material and manufacturing method thereof

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Experimental program
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Embodiment Construction

[0064] The blade root structure and manufacturing method of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments of the present invention.

[0065]At the blade root of the wind turbine, the part of the blade shell within 10 meters from the blade root includes at least bolt sleeves, glass fiber and bamboo, wherein the bamboo is in a long strip structure and arranged side by side, and the two adjacent bamboo strips The contact surfaces are parallel to each other, which can ensure that the fiber directions of all the bamboo strips are basically the same to jointly bear the blade load. Moreover, all or part of the connection between the glass fiber and the bolt sleeve and / or the strip-shaped bamboo is bonded as a whole by an adhesive in a miter joint, wherein the glass fiber and the bolt sleeve and / or Or between the long strips of bamboo and / or the foam wedge strips 12', a mitred joint can be used. The mitred...

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Abstract

The invention discloses a blade root structure made of a bamboo composite material and a manufacturing method thereof. The blade root structure comprises glass fiber, a bolt sleeve and a bamboo material. The blade root structure also comprises a bolt sleeve preembedded at the blade root after being positioned through a root flange tooling, a bamboo wedge-shaped strip is pressed between the glass fiber and the bolt / bolt sleeve in a blade root shell, fiber wires are wound around the bolt sleeve, a bamboo wedge-shaped strip is embedded between the bolt sleeve and the bolt sleeve, and a foam wedge-shaped strip is also laid at the end part of the bolt sleeve. A mold root positioning flange with the bolt sleeve and the mold are subjected to positioning connection, and the root positioning flange is installed on the mold through the mounting holes; meanwhile, the root positioning flange achieves design accuracy and requirements. The processed bamboo wedge-shaped strip is pressed between the bolt sleeves according to technological requirements, so that the root achieves enough strength.

Description

technical field [0001] The present invention relates to the manufacturing technology of wind power generator blades, in particular to a bamboo composite material blade root structure and its manufacturing method, and also relates to the manufacturing method of blade root bolt pre-embedding and casing one-time injection molding, which is applicable to all levels Manufacture of shaft generator blades. Background technique [0002] At present, there are mainly three types of wind turbine blades made of composite materials on the market, namely unsaturated polyester resin FRP blades, epoxy resin FRP blades and carbon fiber FRP blades. Among them, unsaturated polyester resin fiberglass blades are characterized by difficult design, high product shrinkage, and molds that do not require a heating system. Epoxy fiberglass blades are characterized by being widely used in the design, strong process adaptability, and the mold needs to be heated. Carbon fiber glass fiber reinforced pla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D1/06B29C70/34
CPCY02E10/72Y02P70/50
Inventor 朱玉亮刘海东王文启
Owner 北京世纪威能科技有限公司
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